Evidence of magma mixing identified in the Early Eocene Caina pluton from the Gangdese Batholith, southern Tibet

Abundant mafic enclaves are enclosed within the Quxu batholith in the eastern Gangdese magmatic belt, southern Tibet. This study focuses on the petrogenesis and affinity of these mafic enclaves with their host diorite-granodiorite, as well as their mechanism of formation and tectonic setting. Zircon U-Pb geochronological and Hf isotopic results demonstrate that the mafic enclaves and their hosts were emplaced at ~ 50 Ma, with similar positive...